captioning sponsored by newshour productions, llc >> woodruff: good evening. i'm judy woodruff. >> sreenivasan: and i'm hari sreenivasan. >> woodruff: on the newshour tonight, president trump touts the g.o.p.'s new health care bill, as republicans wrangle over how to replace obamacare. >> sreenivasan: also ahead, mirrors and lights-- a travelling art exhibit that pushes boundaries out to infinity. >> it's about filling a void that she has experienced, the trauma she's experienced and that incessant energy. >> woodruff: and, it's friday. mark shields and michael gerson are here to take on the week's news. >> sreenivasan: all that and more, on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: